12400531001511 has 16 divisors (see below), whose sum is σ = 17069133434880. Its totient is φ = 7999528865760.

The previous prime is 12400531001503. The next prime is 12400531001531. The reversal of 12400531001511 is 11510013500421.

It is not a de Polignac number, because 12400531001511 - 2³ = 12400531001503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400531001531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5861020 + ... + 7691073.

It is an arithmetic number, because the mean of its divisors is an integer number (1066820839680).

Almost surely, 2^{12400531001511} is an apocalyptic number.

12400531001511 is a deficient number, since it is larger than the sum of its proper divisors (4668602433369).

12400531001511 is a wasteful number, since it uses less digits than its factorization.

12400531001511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561966.

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 12400531001511 its reverse (11510013500421), we get a palindrome (23910544501932).

The spelling of 12400531001511 in words is "twelve trillion, four hundred billion, five hundred thirty-one million, one thousand, five hundred eleven".